Finding the Fourth Proportional to 420,544.24, 580,330.78 and 239,239.10
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Solution
The fourth proportional to 420,544.24, 580,330.78 and 239,239.10 is: 330,138.43
Step by Step Solution
- Step 1: Write the proportion equation
420,544.24 : 580,330.78 = 239,239.10 : x - Step 2: Convert to fraction form
420,544.24/580,330.78 = 239,239.10/x - Step 3: Cross multiply
420,544.24x = 580,330.78 × 239,239.10 - Step 4: Simplify right side
420,544.24x = 138,837,814,362.23 - Step 5: Solve for x
x = 138,837,814,362.23/420,544.24 - Step 6: Final answer
x = 330,138.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.